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This article investigates the outage performance of incremental relaying based energy harvesting non-orthogonal multiple access (IR-EH-NOMA) system. Firstly, we describe the IR-EH-NOMA protocol considering downlink user assisted relaying and power splitting (PS) based EH strategy. We derive analytical expressions for the outage probabilities experienced by the downlink users and the system outage probability of IR-EH-NOMA network, in the presence of imperfect successive interference cancellation (I-SIC). For comparison, we derive the corresponding outage expressions for the conventional cooperative relaying based NOMA network with EH (CR-EH-NOMA network) as well. We provide extensive numerical and Monte-Carlo simulation results to establish the supremacy of IR-EH-NOMA system over CR-EH-NOMA system in terms of the outage performance. We separately derive analytical expressions for (i) the optimal power allocation (OPA) factor at the source and (ii) the optimal power splitting (OPS) factor at the relay that minimizes the asymptotic system outage probability of the considered networks. With the help of numerical and simulation investigations, we establish that the system outage of the considered networks improve significantly when OPA and OPS factors are selected according to the criterion described in the article. The analytical results are validated by extensive simulation studies.

We report the effect of electric field on third order nonlinear optical properties of Hydrazone (Hz) doped Polymethyl methacrylate (PMMA) films. The films were prepared by solution casting method. Poling of films was done by corona discharge. Single beam Z-scan technique with 7ns Nd: YAG laser pulses at 532nm were employed for the measurements. Third order susceptibility of films was measured with an emphasis on the applied electric field. We also demonstrated the second harmonic generation in the corona poled films.